Mineral Hardness Testing Kit
Contains several minerals for testing the hardness of minerals using the Moh's scale. It contains every mineral on the Moh's scale (except for Diamond!). Samples are small but indicative of relative hardness. Great hand samples to show students the difference between the various degrees of hardness on the Moh's scale. Great to use in conjunction with our Deluxe Moh's Hardness Pick Set! Ideal for students.